mongoose findoneanddelete code example

Example 1: findoneanddelete mongoose

// Find only one document matching the
// condition(age >= 5) and delete it
User.findOneAndDelete({age: {$gte:5} }, function (err, docs) {
    if (err){
        console.log(err)
    }
    else{
        console.log("Deleted User : ", docs);
    }
});

Example 2: mongoose findoneandupdate

// note: this uses async/await so it assumes the whole thing 
// is in an async function 

const doc = await CharacterModel.findOneAndUpdate(
  { name: 'Jon Snow' },
  { title: 'King in the North' },
  // If `new` isn't true, `findOneAndUpdate()` will return the
  // document as it was _before_ it was updated.
  { new: true }
);

doc.title; // "King in the North"

Example 3: mongoose model

const schema = new mongoose.Schema({ name: 'string', size: 'string' });
const Tank = mongoose.model('Tank', schema);

Example 4: model mongoose

const modelName = mongoose.model("collectionname", collectionSchema);

//example
const fruitSchma = new mongoose.Schema ({
  name: String
});
const Fruit = mongoose.model("Fruit", fruitSchema);